Oakbrook Preparatory School
Built on a foundation of Christian faith, Oakbrook Preparatory School educates students to be independent learners in a changing world.
Key facts about Oakbrook Preparatory School
- EIN
- 57-0921126
- Latest 990 filing
- Form 990, 2025
- Total assets
- $7,048,705
Data from IRS Form 990, 2025; updated September 2026.
Financial Overview
From 2025 IRS Form 990 · View filing
Total Assets
$7.0M
-4.9% YoY
Revenue
$6.3M
+18.0% YoY
Net Investment Income
$16K
+154.8% YoY
Expenses
$6.8M
+11.9% YoY
About Oakbrook Preparatory School
Based on IRS filings
Oakbrook Preparatory School is a public charity, based in Spartanburg, SC. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $7.0M in total assets. Net investment income was $16K.
Ready to take the next step with Oakbrook Preparatory School?
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Giving Over Time
Total grant dollars and number of grants per year
In 2021 it made 1 grant totaling $559K.
Grant Insights
How this funder distributes its grants
Grant Size Distribution
1 grants across all recorded years
The most common grant size was in the $500K–1M range: 1 grant of 1 (100%).
Giving History
Grant recipients and amounts by year
No grants recorded for 2025.
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $7,048,705 | $7,415,417 | $8,360,022 |
| Revenue | $6,311,296 | $5,347,143 | $5,770,286 |
| Expenses | $6,812,694 | $6,088,895 | $5,873,235 |
| Net Investment Income | $16,090 | $6,314 | $13,205 |
Data update history
When this profile's IRS filing data changed on Grantable
- Added Form 990 for fiscal year 2019 (received by the IRS June 23, 2020)
- Updated Form 990 for fiscal year 2021 (received by the IRS November 16, 2021)
- Added Form 990 for fiscal year 2025 (received by the IRS May 15, 2026)
Leadership & Key People
Officers and directors from IRS filings
Oakbrook Preparatory School is led by Gabe O'Sullivan, Board Chair on every filing since 2024; 2 of 12 officers listed in 2025 are compensated.
Officers on the 2025 filing
Gabe O'Sullivan
Board Chair
On filings since 2024
2 hrs/week
No compensation reported
Jessica Coker
Finance Chair
On filings since 2024
2 hrs/week
No compensation reported
Alicia Womick
Interim Coexec Director
New on the 2025 filing
40 hrs/week
$97K (2025)
Amanda Ledbetter
Interim Coexec Director
New on the 2025 filing
40 hrs/week
$99K (2025)
Karen Canup
Board Member
Director → Board Member, 2024
On filings since 2019
2 hrs/week
No compensation reported
Kim Land
Board Member
Director → Governance Chair, 2024
Governance Chair → Board Member, 2025
On filings since 2019
2 hrs/week
No compensation reported
Lee Ann Ballew
Vice Chair
Board Member → Vice Chair, 2024
On filings since 2021
2 hrs/week
No compensation reported
Martin Wildeman
Board Member
On filings since 2021
2 hrs/week
No compensation reported
Bryan Lawson
Board Member
Board Member → Bg Chair, 2024
Bg Chair → Board Member, 2025
On filings since 2023
2 hrs/week
No compensation reported
Danielle Cuthbertson
Board Member
On filings since 2024
2 hrs/week
No compensation reported
Edward Jabbour
Board Member
On filings since 2024
2 hrs/week
No compensation reported
Tara Weese
Board Member
On filings since 2024
2 hrs/week
No compensation reported
Former officers (17)
- Former: Kyle Boyles (2019–2024) — Head of School
- Former: Geoff Haas (2019–2023) — Board Chair
- Former: Lisa Armbruster (2019–2023) — Board Member
- Former: Randy Kibler (2019–2023) — Board Member
- Former: Brent Babb (2021–2023) — Treasurer
- Former: Cameron Fant (2021–2023) — Vice Chair
- Former: Hank Jolly (2021–2023) — Board Member
- Former: Mike Kirkland (2021–2023) — Board Member
- Former: Brooks Moss (2023) — Board Member
- Former: Nigel West (2019–2022) — Board Member
- Former: Beth Patterson (2019) — Director
- Former: Bob Caldwell (2019) — Director
- Former: Cindy Walia (2019) — Director
- Former: David Foy (2019) — Business Manager
- Former: Doug Grindle (2019) — Chair
- Former: John Lindsell (2019) — Head of School
- Former: Pat Froemming (2019) — Director
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $99K, to Amanda Ledbetter (Interim CoExec Dir). 2 officers or directors reported compensation on that filing.
Frequently asked questions about Oakbrook Preparatory School
How large is Oakbrook Preparatory School?
Oakbrook Preparatory School reported $7.0M in total assets on its 2025 IRS Form 990. Its revenue that year was $6.3M.
Where does Oakbrook Preparatory School operate?
Oakbrook Preparatory School has awarded grants in District of Columbia.
What is Oakbrook Preparatory School's EIN?
Oakbrook Preparatory School's EIN (Employer Identification Number) is 57-0921126. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Here's the math on researching Oakbrook Preparatory School by hand.
Explore Open Grants
Browse active grant opportunities in Oakbrook Preparatory School's focus areas in our free grants database
Similar Funders
Funders that support many of the same organizations
Central Carolina Community
Columbia, SC
Central Carolina Community funds education, human services, health, arts and culture, community development, disaster relief, and nonprofit capacity-building, primarily in the 11-county Midlands region of South Carolina, with some statewide and national grantmaking. Its 2025 grants had a median of $20,000; eligible nonprofits may apply through the online portal during published grant periods, though some opportunities are invitation-only.
Assets
$264.3M
Grants
488
Total Given
$26.5M
Coastal Community Foundation of South
N Charleston, SC
The Coastal Community Foundation of South Carolina funds nonprofits through competitive grants for areas including education, health, community development, arts, and human needs. Its 2024 grants had a median of $16,500, with awards ranging from $5,057 to $2.3 million, across nine coastal South Carolina counties. It accepts applications only for listed competitive programs, through its online portal.
Assets
$435.6M
Grants
459
Total Given
$26.0M
Community Foundation
Greenville, SC
Community Foundation of Greenville funds nonprofits and projects in arts, education, environment, health, and human services, with a focus on Greenville County, South Carolina. Its 2026 Capacity Building Grants award $5,000–$12,500; 2024 grants had a median of $23,900. It accepts unsolicited requests through its Capacity Building Grants program.
Assets
$118.8M
Grants
346
Total Given
$26.4M
South Carolina Christian Foundation
Spartanburg, SC
The foundation funds Christian ministries, churches, and quality-of-life organizations, with particular attention through its Community Trust Grants to Christian nonprofits in five South Carolina counties. Its 2024 grants had a median of $15,000, though awards varied widely; most grant dollars went to South Carolina, with additional funding in other states. Community Trust applicants must submit a Ministry Introduction Form and be invited to apply; the profile does not state whether other requests are unsolicited.
Assets
$45.4M
Grants
285
Total Given
$11.6M
United Community Bank Foundation
Greenville, SC
United Community Bank Foundation funds economic empowerment, arts, housing and youth development in communities served across Alabama, Florida, Georgia, North Carolina, South Carolina and Tennessee. Its 2025 grants ranged from $250 to $16,000, with a median of $2,000. It does not accept unsolicited requests; grants go to preselected organizations.
Assets
$12.6M
Grants
235
Total Given
$505K
Spartanburg County Foundation
Spartanburg, SC
The Spartanburg County Foundation funds nonprofits serving Spartanburg County residents, especially work advancing quality of life, education, economic mobility, and nonprofit capacity. Itemized grants had a median award of $15,500, though amounts varied widely; the information provided does not state whether it accepts unsolicited requests.
Assets
$280.4M
Grants
227
Total Given
$19.0M
Community Foundation of the Lowcountry
Hilton Head Island, SC
The Community Foundation of the Lowcountry funds nonprofits working in areas such as education, health, human services, arts, environment, animal welfare, and community development in Beaufort, Colleton, Hampton, and Jasper Counties, South Carolina; its Impact Grants have a narrower service area. Grants vary widely: the 2025 median was $15,000, with awards from $5,000 to over $1.2 million. It accepts requests through grant programs that begin with a Grant Inquiry Form.
Assets
$99.7M
Grants
193
Total Given
$9.4M
Comporium Foundation Inc
Rock Hill, SC
Comporium Foundation supports education, community welfare, civic activity, health, economic development, trails, and religious organizations, primarily in South Carolina and North Carolina. Its 2024 grants ranged from $100 to $70,000, with a median of $3,625. It does not accept unsolicited requests and contributes only to preselected charitable organizations.
Assets
$20.6M
Grants
122
Total Given
$1.1M
Gods Goods Mt Pleasant
Mt Pleasant, SC
GODS GOODS MT PLEASANT supports preselected charities working in areas such as Christian education and ministry, community development, and services for people facing poverty or abuse. Its 2025 grants ranged from $750 to $10,000, with a median of $5,000; most funding went to South Carolina, with smaller amounts awarded in several other states. It does not accept unsolicited requests.
Assets
$201K
Grants
105
Total Given
$467K
The Sunshine Foundation Inc
Barnwell, SC
The Sunshine Foundation supports health, economic, educational, and environmental purposes, as well as community and performing arts organizations, primarily in South Carolina. Its 2024 grants had a median of $1,000, though amounts ranged from $25 to $165,126. It funds only preselected charitable organizations and does not accept unsolicited requests.
Assets
$13.2M
Grants
104
Total Given
$724K
One Graycliff
Greenville, SC
ONE GRAYCLIFF supports 501(c)(3) charities, with stated priorities in women, children, education, and housing; it favors organizations serving its active markets, especially in South Carolina. Its 2025 grants ranged from $150 to $27,000, with a median of $1,000. The filing says to submit a written request but does not explicitly state whether unsolicited requests are accepted.
Assets
$441K
Grants
103
Total Given
$229K
J M Smith Foundation
Spartanburg, SC
The J M Smith Foundation supports a range of charitable organizations, including churches, human services, education, arts, and animal welfare groups, primarily in South Carolina, with some grants in nearby states. In 2026, grants ranged from $200 to $28,200, with a median of $2,000. It funds only preselected organizations and does not accept unsolicited requests.
Assets
$908K
Grants
102
Total Given
$539K
More Funders in South Carolina
Oakbrook Preparatory School down — hundreds of funders to go?